jon stewart is an a guest. >> jimmy: he's a great guy. >> just for example. that's when you learn that, like, he majored in chemistry in college. so i had to ask him the geek question -- did he have a favorite element. and he said -- yes, he did. he said carbon. so i said well, why? he said because it's the slut of the periodic table. [ laughter ] it binds with all other elements in many different ways from behind, from above. [ laughter ] [ cheers and applause ] >> jimmy: what is going down? >> because of that, it's the foundation of biology. carbon makes the most complex molecules there are, and the most complex state of chemistry we know, we call biology. >> jimmy: that is very cool. >> that's useful to know when you're looking for life elsewhere in the universe. so, so, there -- talking about science with jon stewart. and there are others. we have a guy who wrote the book called "the physics of superheroes." that was fun, and -- two parts in a week. >> jimmy: like, how can superman actually fly? >> well yeah. so, yeah. there's a lot of violation of the la